欧美自拍在线国产

In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.项羽又道：刘邦再凶猛，现在的活动范围不过是在函谷关以内。　　这部剧由《美国众神》作者尼尔·盖曼与《碟形世界》作者特里·普拉切特所著的同名幽默奇幻小说改篇（该小说名称是恶搞恐怖电影《凶兆 The Omen》）。 两位作家斩获了二十余次奇幻文学的头等大奖，写《好兆头》却只是为了让对方大笑出声。原著功力可想而知。盖因为刘邦心里有一个怀疑的小树苗已经越长越大，魔由心生已经有些不可控制。This post only said the superficial image, but did not lose the technical level, for example, why did you lift weights and squat lower and stand apart narrower?包公升堂，石樵状告自己的次媳石玉奴与裴家少庄主裴慕文串通，谋杀其长子石伯祥，但裴慕文的随从马雄却坚持此案为自己所为。免礼。